<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<div id="app">
  <h2 v-if="isShow">{{message}}</h2>
  <h1 v-else>isShow为false时显示</h1>
</div>

<script src="../vue.js"></script>
<script>
  const app = new Vue({
    el: '#app',
    data: {
      message: 'hello',
      isShow:false
    }
  })
</script>
</body>
</html>
